Langley's Aerodrome Shop, South Shed, by Unknown, 1900, Smithsonian Archives - History Div, Samuel P. Langley's Aerodrome Shop in South Shed built in 1898 and located in the South Yard behind the Smithsonian Institution Building. Samuel P. Langley (1834-1906) was an astrophysicist and third Secretary of the Smithsonian Institution (1887-1906). He was also founder of the Smithsonian Astrophysical Observatory. He did research in aeronautics and attempted to build the first manned flying machine..